The issue is that you have a long pattern of nationalistic swipes in your posts to HN (to the point where I brace myself when I see your username, because I expect to run into yet another). It's not ok, it's against the guidelines, we ban accounts that do it, and we need you to stop. You've done this many times about topics other than healthcare, so this isn't just about healthcare (though, separately, repeating the same points over and over about a classic flamewar topic is also against both the site guidelines and the intended spirit of HN).

I don't mean to pick on you personally and I hope that's clear. The same rule holds for every user, regardless of which country anyone has a problem with.

There's a pretty broad assertion buried in your confusion.

Like for healthcare, the issue isn't that we can't look at other systems and see that there are advantages, it's that there is widespread resistance to moving away from the existing system. There isn't any single reason for it (lots of people like that they are making lots of money, other people have ideological concerns, etc, etc). Trying to reduce that down to "US can't learn" isn't really very interesting, as that isn't the problem.

Is there really a huge difference or are you just subject to a lot of confirmation bias. Canada and Australia are far from solving poverty.